The Regions of the distinctly different physical areas that has serve as the boundaries between the different communities are called as ecotone
An ecotone is the transition area between the two biological communities, where the two communities must meet and integrate. It may be the narrow or wide, and it may be the local ("the zone between a field and forest") or regional ("the transition between forest and grassland ecosystems").
The Ecotones are the areas of the steep transition between the ecological communities, the ecosystems, and/or ecological regions along with the environmental or other the gradient. Ecotones may occur at multiple spatial scales and the range from the natural ecotones between the ecosystems and biomes by the human-generated boundaries
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Answer:
pituitary gland-growth hormone
thyroid gland- thyroxine
adrenal gland- adrenalin
pancrease- insulin
ovary-estrogen
testis-testosterone
Explanation:
C. cell membrane the cell membrane lets the good stuff in and keeps the bad stuff out.
<span>nebula--------» Protostar----------» Main Sequence----------» Red Giant---------»White Dwarf</span>
Answer:
<em>B</em><em>.</em>
Explanation:
<em>h</em><em>o</em><em>p</em><em>e</em><em> </em><em>i</em><em>t</em><em> </em><em>h</em><em>e</em><em>l</em><em>p</em>
<em>p</em><em>l</em><em>s</em><em>s</em><em> </em><em>b</em><em>r</em><em>a</em><em>i</em><em>n</em><em>l</em><em>y</em><em>s</em><em> </em><em>m</em><em>e</em>